3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( 'a' => 'Bonjour', 'b' => 'Aurev', ); $b = array( 'a' => 'A', 'b' => 'B', 'c' => 'Tcho', ); $c = array_merge($a, $b); var_dump($c);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(3) { ["a"]=> string(1) "A" ["b"]=> string(1) "B" ["c"]=> string(4) "Tcho" }

preferences:
213.31 ms | 405 KiB | 307 Q